Chambéry is a city in Savoie, France, located 10km south of Lac du Bourget. It is the former capital of the duchy of Savoy.

Above, castle of the dukes of Savoy.

Above, pro-Palestine demonstration.

Above, Place Saint-Léger.

Above, Carré Curial.

Above, Esplanade de l’Europe.

Above, cathedral.

Above, inside the cathedral.

Above, Fountain of Elephants, in honour of Benoît de Boigne, a general of the Maratha Empire, in India.

Above, city hall.

After getting back to Aix-les-Bains from the Mont Revard, I took my bike on the Voie Verte du Lac du Bourget, a bike lane (actually shared with roller skaters and pedestrians) next to the lake. The Lac du Bourget is the biggest lake in France and the bike lane only goes along a small part of its shore. When I arrived at Bourget-du-Lac at the southern shore of the lake, I took the Avenue Verte Nord de Chambéry, which is another separate bike lane that goes all the way to Chambéry.

Above, Dent du Chat on the other side of the lake.

Above, kitesurfers.

Below, on the Avenue Verte Nord to Chambéry.

Above, Croix du Nivolet.

After the hike to Croix du Nivolet, I made a stop at the nearby Belvédère du Mont Revard. It is a viewpoint that provides a great view on the Lac du Bourget below and the surrounding mountains. I then took my bike down the mountain back to Aix-les-Bains.

Above, this is the “Skyview” platform, which has a glass floor to see the cliffs below.

Above, Lac du Bourget.

Above, Aix-les-Bains.

Above, take off area for paragliders.

Above, Dent du Chat on the other side of the lake.

Above, glider.

Above, on the way down to Aix-les-Bains.

Above, Albanais.

Above, in Aix-les-Bains, in front of the Thermes Nationaux (National Spa).

Above, in the Parc Floral des Thermes.

Giant cross @ Hike to Croix du Nivolet

The Croix du Nivolet is a giant christian cross (22 meters high) at the summit of the Dent du Nivolet, in the Bauges Massif. Its size and location make it highly visible from Chambéry and the surrounding towns. It offers a great view on the valley below, as well as the Lac du Bourget. The path to get there is pretty easy (although sometimes muddy) and is therefore very popular. This itinerary was the inspiration for the path I followed.

I arrived at Aix-les-Bains from Annecy by train. I then took a summer shuttle to La Féclaz, a ski station in the mountains close to the starting point of the hike. The shuttle allowed bikes on board so I took mine with me and biked to the start of the trail proper near the Chalet du Sire. When I reached the cross, there was a great view as expected but it got covered with clouds very soon after. I went back using the same path.

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Above, Chalet du Sire.

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Cow @ Hike to Croix du Nivolet

Cow @ Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Above, view of the cross from afar.

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Above, Lac du Bourget.

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Giant cross @ Hike to Croix du Nivolet

Giant cross @ Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Giant cross @ Hike to Croix du Nivolet

Giant cross @ Hike to Croix du Nivolet

Above, the Croix du Nivolet.

Lac du Bourget @ Hike to Croix du Nivolet

Above, view from the summit.

Hike to Croix du Nivolet

Giant cross @ Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Butterfly @ Hike to Croix du Nivolet

Hike to Croix du Nivolet

Giant cross @ Hike to Croix du Nivolet

Hike to Croix du Nivolet

Above, the center of Chambéry.

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Cricket @ Hike to Croix du Nivolet

Above, cricket.

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Butterfly @ Hike to Croix du Nivolet

Cricket @ Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Above, soon after I arrived at the summit, clouds formed.

Brocken spectre @ Hike to Croix du Nivolet

Above, Brocken Spectre.

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Above, Dent du Chat.

Fog @ Hike to Croix du Nivolet

Above, on the way down.

Fog @ Hike to Croix du Nivolet

Hike to Croix du Nivolet

Fog @ Hike to Croix du Nivolet

Fog @ Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Above, Lac du Bourget.

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Hike to Croix du Nivolet

Above, in La Féclaz.

Hike to Croix du Nivolet

Some time ago, I saw this article about using the Qgis2threejs plugin to export a QGIS map as a 3D visualisation in the browser, thanks to three.js and WebGL. When I recently tried to follow the post to reproduce the results, I had some problem sourcing the data (related to Vienna, Austria) so instead I searched for data related to Paris to create a more original scene. Here is the result corresponding to the screenshot above and another one with aerial photos, both showing the Montmartre area of Paris.

The first step was to create a standard QGIS map with all the necessary data:

  • Base map: OSM Mapnik tiles. To display them in QGIS, there are multiple ways: Either use the OpenLayers plugin, by selecting the OpenStreetMap layer, or the TileLayer plugin, by first copying this tile description file into the ~/.qgis2/python/plugins/TileLayerPlugin/layers/ directory and then selecting the OSM layer with the plugin.
  • Elevation data (DEM): I downloaded the tile that covers most of France from the SRTM Tile Grabber. It provides a Tiff that will be displayed by QGIS in levels of gray by default.
  • Tree data: a SHP layer with the locations of trees lining the streets of Paris (Arbres d’Alignement), obtained from the French OpenData portal (data.gouv.fr). I actually added the same layer twice in the QGIS project, so that in Qgis2threejs, I could export one of the layers as the trunks of the trees (cylinders) and one as the leaves (spheres). I kept one of the layers visible, rendered as a circle with some transparency so it would look like a shadow of the tree, and hid the other.
  • Building data: a SHP layer with the location of buildings in Paris (Volumes bâtis), obtained from the Paris OpenData portal. It only contains the first 50000 buildings of the full dataset. The full data is pretty big, so this will do for my needs. If necessary, the GeoJSON dataset contains all the buildings.

The Qgis2threejs plugin will use what is currently in the QGIS map window as the texture for the 3D terrain. Therefore only the layers that should be in the output should be kept visible: This is why some of the layers are unchecked in the QGIS UI shown in the screenshot above.

All the layers, even if not visible in the QGIS map, can be configured to be output in vector form, potentially with some transformation applied, like an extrusion or a sphere. These are the settings that I used:

  • DEM: The SRTM elevation data.
  • Tree leaves: Green sphere of radius 3m at 5m above the ground.
  • Tree trunks: Beige cylinder of radius 0.5m and height 5m at 0m above the ground.
  • Buildings: Extrusion of 10m, with random colors.

I also applied some vertical exaggeration in the World settings.

After launching the conversion (which does not take very long for such a small extent), the browser opens a web page with the exported visualisation.

Above, an alternative version, with aerial photos.

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Name: Guilhem Vellut Location: Annecy, France

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